Holbein Duo Aqua Oil Mediums were designed specifically for use with Duo Aqua Oil Colors. Use them to enhance transparency or translucency, create a gloss or matte finish, accelerate drying time, or aid brushability and flow.

Linseed Oil
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This is a linseed oil that increases the transparency and gloss finish of Duo Aqua Oil Colors while slowing drying time. It can be thinned with water; the resulting milky appearance will become clear when dry. While Duo Linseed Oil may become cloudy over time, its performance is not affected.